Vacuum cleaner



FIG. 1 is a perspective view of a vacuum cleaner showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a side view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a side view from the side opposite that of FIG. 3;

FIG. 6 is a plan view thereof from above; and,

FIG. 7 is a plan view thereof from below.

The details shown in broken lines form no part of the claimed design. 

We claim the ornamental design for a vacuum cleaner, as shown and described. 